Micron Technology

MT41K256M16RE-125:D - 4Gb DDR3L SDRAM 256Mx16 | Micron

MPN: MT41K256M16RE-125:D ✓ Active
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1.35 V Vdss FBGA-96 (9x14 mm) Package DDR3L SDRAM Memory
From $4.19 USD / Unit
MOQ: 1 |
Price updated: 2026-08-18
Volume Pricing
Qty Unit Price Extended
1 $6.55 $6.55
10 $5.9 $59.00
100 $5.24 $524.00
500 $4.72 $2,360.00
1,000 $4.19 $4,190.00
ℹ️ All prices are in USD

Drop-in alternatives for MT41K256M16RE-125:D — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

MT41K256M16RE-15E:D

✅ Drop-In
Micron Technology
📦 FBGA-96
SDRAM - DDR3L · 4Gb (256M x 16) · 667 MHz (DDR3L-1333) · 13.5 ns · 1.283 V to 1.45 V (nominal 1.35 V) · 96-FBGA (10x14 mm) · Surface Mount · -40°C to 95°C (TC)

✓ In Stock

$7.2 / Unit

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MT41K256M16HA-125:E

✅ Drop-In
Micron Technology
📦 FBGA-96
DDR3L SDRAM · 4 Gbit · 256M x 16 · 800 MHz · 13.75 ns · 1.35 V (DDR3L) · 1.35 V · 96-FBGA (9x14 mm)

✓ In Stock

$3.1 / Unit

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MT41K256M16TG-125

✅ Drop-In
Micron Technology
📦 FBGA-96
DDR3L SDRAM · 4 Gbit · 256M x 16 · 1.35 V · 800 MHz · 20 ns · Parallel · 96-FBGA (8x14)

✓ In Stock

$7.2 / Unit

View Datasheet →

MT41K256M16HA-125

✅ Drop-In
Micron Technology
📦 FBGA-96
SDRAM - DDR3L · 4Gbit (256M x 16) · 16 bit · 800 MHz · 13.75 ns · 1.35 V · 96-FBGA (9x14 mm) · 96

✓ In Stock

$6.3636 / Unit

View Datasheet →

IS43TR16256A-125KBLA2

✅ Drop-In
📦 FBGA-96
Cross-brand, similar DDR3L specs

📋 Reference alternative (not in catalog)

K4B4G1646D-BYH9

✅ Drop-In
Samsung Electronics
📦 FBGA-96
4 Gb · 256M x 16 · 1333 Mbps · 1.35 V · 0 ~ 85 °C · 96FBGA · 8 · Programmable

✓ In Stock

$2.3 / Unit

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H5TC4G63CFR-PBL

✅ Drop-In
SK hynix
📦 FBGA-96
DDR3L SDRAM · 4 Gb (256M x 16) · 1.35 V · 1600 Mbps (PC3L-12800) · 96-ball FBGA (TFBGA) · 96 · RECTANGULAR · BALL

✓ In Stock

$6.5 / Unit

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NT5CB256M16CP-EK

✅ Drop-In
Nanya Technology
📦 FBGA-96
DDR3L SDRAM · 4Gb · 256M x 16 · 1.35V (1.425V to 1.575V) · DDR3-2133 (CL14) · 9, 10, 11, 12, 13, 14 · 5, 6, 7, 8, 9 · Programmable

✓ In Stock

$5.9 / Unit

View Datasheet →

MT41K256M16RE-125:D Maximum Ratings & Electrical Characteristics

Memory Type DDR3L SDRAM
Density 4 Gb
Organization 256M x 16
Supply Voltage 1.35 V
Data Rate 1600 MT/s
CAS Latency 11
Package FBGA-96 (9x14 mm)
Operating Temperature 0C to +95C (TC)
RoHS Compliant
Lead-Free Yes
Burst Length 8, 4
On-Die Termination Yes
Auto-Refresh Yes
Self-Refresh Yes
Ball Pitch 0.8 mm

MT41K256M16RE-125:D Pin Configuration

Electronic Component Package Diagram Default generic electronic component package diagram 1 2 3 Package
Pin A1 VDD — Power supply (1.35V)
Pin A2 DQ0 — Data input/output 0
Pin A3 DQ1 — Data input/output 1
Pin A4 VSS — Ground
Pin A5 DQ2 — Data input/output 2
Pin A6 DQ3 — Data input/output 3
Pin A7 VDD — Power supply (1.35V)
Pin A8 DQ4 — Data input/output 4
Pin A9 DQ5 — Data input/output 5
Pin A10 VSS — Ground
Pin A11 DQ6 — Data input/output 6
Pin A12 DQ7 — Data input/output 7
Pin B1 VDDQ — I/O power supply (1.35V)
Pin B2 DQ8 — Data input/output 8
Pin B3 DQ9 — Data input/output 9
Pin B4 VSSQ — I/O ground
Pin B5 DQ10 — Data input/output 10
Pin B6 DQ11 — Data input/output 11
Pin B7 VDDQ — I/O power supply (1.35V)
Pin B8 DQ12 — Data input/output 12
Pin B9 DQ13 — Data input/output 13
Pin B10 VSSQ — I/O ground
Pin B11 DQ14 — Data input/output 14
Pin B12 DQ15 — Data input/output 15

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for MT41K256M16RE-125:D Drain-to-Source Voltage (Vds) Drain Current (Id)

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

MT41K256M16RE-125:D is suitable for 6 applications: Server Memory Modules, Networking Equipment, Industrial PCs, Consumer Electronics, Embedded Systems, Data Storage Systems.

🖥️

Server Memory Modules

The MT41K256M16RE-125:D is ideal for server memory modules (DIMMs) where high density and low power are critical. Its 4Gb density and 1.35V operation reduce power consumption in data centers, while the 1600 MT/s data rate provides sufficient bandwidth for server workloads. The FBGA-96 package allows for compact module designs, and the device's on-die termination improves signal integrity in multi-rank configurations.

🌐

Networking Equipment

In networking equipment such as routers and switches, the MT41K256M16RE-125:D provides high-speed packet buffering and routing table storage. Its 1600 MT/s data rate ensures low latency for data forwarding, while the 1.35V supply reduces power dissipation in always-on network devices. The device's self-refresh mode helps maintain data integrity during idle periods, and the FBGA-96 package fits well on dense PCB layouts.

🏭

Industrial PCs

Industrial PCs require reliable memory that can operate in harsh environments. The MT41K256M16RE-125:D operates over a temperature range of 0C to +95C, making it suitable for industrial applications. Its low 1.35V operation reduces heat generation, and the FBGA-96 package provides robust solder joints. The device's auto-refresh and self-refresh features ensure data retention in power-cycled systems.

📺

Consumer Electronics

In consumer electronics like set-top boxes and smart TVs, the MT41K256M16RE-125:D offers a balance of performance and power efficiency. Its 4Gb density supports high-definition video streaming and multitasking, while the 1.35V supply extends battery life in portable devices. The FBGA-96 package is compact, enabling slim device designs. The device's low power consumption also reduces heat, improving reliability.

🔧

Embedded Systems

Embedded systems, such as those in automotive infotainment and medical devices, benefit from the MT41K256M16RE-125:D's low power and high density. The 1.35V operation is ideal for battery-powered devices, and the 1600 MT/s data rate supports real-time processing. The FBGA-96 package is suitable for space-constrained PCBs, and the device's temperature range covers most embedded environments. Its self-refresh mode is crucial for low-power standby states.

🖥️

Data Storage Systems

In data storage systems like SSDs and NAS devices, the MT41K256M16RE-125:D is used for caching and buffering. Its high density (4Gb) allows for large cache sizes, improving read/write performance. The 1.35V supply reduces power consumption in storage arrays, and the 1600 MT/s data rate ensures fast data transfer. The FBGA-96 package is compatible with standard PCB assembly processes, and the device's reliability is critical for 24/7 operation.

What is the memory density of MT41K256M16RE-125:D?
The MT41K256M16RE-125:D has a memory density of 4Gb, organized as 256M x 16. According to Micron's datasheet, this DDR3L SDRAM provides 4,294,967,296 bits of storage, suitable for applications requiring high capacity in a compact FBGA-96 package.
What is the operating voltage of MT41K256M16RE-125:D?
The MT41K256M16RE-125:D operates at 1.35V, which is the DDR3L standard. This low voltage reduces power consumption by approximately 20% compared to standard 1.5V DDR3, making it ideal for power-sensitive applications like laptops and embedded systems.
What is the data rate of MT41K256M16RE-125:D?
The MT41K256M16RE-125:D supports a data rate of 1600 MT/s (DDR3L-1600). This corresponds to a clock frequency of 800 MHz with double data rate transfer, providing high bandwidth for memory-intensive applications.
What is the package type of MT41K256M16RE-125:D?
The MT41K256M16RE-125:D comes in a 96-ball FBGA package with dimensions of 9x14mm and a ball pitch of 0.8mm. This surface-mount package is lead-free and RoHS compliant, suitable for automated assembly.
Is MT41K256M16RE-125:D RoHS compliant?
Yes, the MT41K256M16RE-125:D is RoHS compliant and lead-free. According to the datasheet, it meets the Restriction of Hazardous Substances directive, making it suitable for use in consumer electronics and other markets with environmental regulations.
What is the price of MT41K256M16RE-125:D?
As of 2026-08-18, the price for MT41K256M16RE-125:D is approximately $6.55 for 1 piece, with volume discounts available. For example, at 1000 pieces, the price drops to around $4.19 per unit, as listed by distributors like Octopart and Easybom.
Where can I buy MT41K256M16RE-125:D?
MT41K256M16RE-125:D is available from multiple distributors including DigiKey, Mouser, Octopart, and Win Source. You can check real-time stock and pricing on their websites. As of 2026-08-18, it is in stock at several distributors.
What is the lead time for MT41K256M16RE-125:D?
The lead time for MT41K256M16RE-125:D varies by distributor and order quantity. Typically, it ranges from 2 to 6 weeks for standard orders. For current lead times, please contact the distributor directly or check their website for up-to-date information.
Is MT41K256M16RE-125:D in stock?
As of 2026-08-18, MT41K256M16RE-125:D is in stock at several distributors including DigiKey and Mouser. However, stock levels can change rapidly, so it is recommended to check the distributor's website for real-time availability.
What is the difference between MT41K256M16RE-125:D and MT41K256M16RE-15E:D?
The MT41K256M16RE-125:D operates at 1600 MT/s (DDR3L-1600) with CAS latency 11, while the MT41K256M16RE-15E:D operates at 1333 MT/s (DDR3L-1333) with CAS latency 9. Both are 4Gb DDR3L SDRAM in FBGA-96 package, but the -125:D is faster, making it suitable for higher-performance applications.
When should I choose MT41K256M16RE-125:D over MT41K256M16HA-125:E?
Choose MT41K256M16RE-125:D when you need a 256Mx16 organization and 1.35V operation. The MT41K256M16HA-125:E is also 4Gb but may have different organization or voltage. The RE-125:D is ideal for low-power, high-density designs, while the HA-125:E might be used in applications requiring specific features. Verify pin compatibility before substitution.
What is the best drop-in replacement for MT41K256M16RE-125:D?
The best drop-in replacement for MT41K256M16RE-125:D is the MT41K256M16RE-15E:D, which shares the same FBGA-96 package and pinout but operates at a lower speed (1333 MT/s). Other alternatives include the MT41K256M16HA-125:E and MT41K256M16TG-125, both from Micron, but verify pin compatibility.
Can MT41K256M16RE-125:D be replaced by IS43TR16256A-125KBLA2?
Yes, the IS43TR16256A-125KBLA2 from ISSI is a cross-brand alternative. It is a 4Gb DDR3L SDRAM in FBGA-96 package with similar specifications. However, verify pin compatibility and timing parameters before use, as minor differences may exist.
Where can I download the MT41K256M16RE-125:D datasheet PDF?
You can download the MT41K256M16RE-125:D datasheet PDF from Micron's official website or from distributor sites like Octopart and Datasheets.com. The datasheet provides detailed specifications, pinout, and application notes.
What are the key specifications of MT41K256M16RE-125:D that engineers should know?
Engineers should know that MT41K256M16RE-125:D is a 4Gb DDR3L SDRAM with 256Mx16 organization, 1.35V supply, 1600 MT/s data rate, CAS latency 11, and FBGA-96 package. It features on-die termination, auto-refresh, and self-refresh, and is RoHS compliant. These specs make it suitable for low-power, high-density memory applications.

Engineering reference data for MT41K256M16RE-125:D — comparison, design guidance, and compliance information.

Selection Guide

Choose the MT41K256M16RE-125:D when you need a 4Gb DDR3L SDRAM with 256Mx16 organization and 1600 MT/s speed for low-power, high-density applications. If you require lower speed to save cost, consider the MT41K256M16RE-15E:D (1333 MT/s). For standard 1.5V DDR3 compatibility, the MT41K256M16TG-125 is an option, but it consumes more power. Cross-brand alternatives like IS43TR16256A-125KBLA2, K4B4G1646D-BYH9, H5TC4G63CFR-PBL, and NT5CB256M16CP-EK offer similar specs and can be used for second sourcing, but verify pin compatibility and timing parameters before substitution.

Comparison with Alternatives

Parameter This Product MT41K256M16RE-15E:D MT41K256M16HA-125:E IS43TR16256A-125KBLA2
Package FBGA-96 FBGA-96 FBGA-96 FBGA-96
Brand Micron Micron Micron ISSI
Density 4 Gb 4 Gb 4 Gb 4 Gb
Organization 256M x 16 256M x 16 256M x 16 256M x 16
Supply Voltage 1.35 V 1.35 V 1.35 V 1.35 V
Data Rate 1600 MT/s 1333 MT/s 1600 MT/s 1600 MT/s
CAS Latency 11 9 11 11
RoHS Compliant Compliant Compliant Compliant

Key Differentiators

  • Lower voltage operation (1.35V) compared to standard DDR3 (vs MT41K256M16TG-125)
  • Higher data rate (1600 MT/s) than the -15E variant (vs MT41K256M16RE-15E:D)
  • Same package and pinout as other Micron 4Gb DDR3L parts (vs MT41K256M16HA-125:E)

Design Notes

Ensure a stable 1.35V supply with low ripple. Use a dedicated voltage regulator for VDD and VDDQ, and place 0.1uF and 1uF decoupling capacitors close to each power pin. The VREF should be generated from a precision divider and bypassed with 0.1uF capacitor.

Follow the layout guidelines in the Micron datasheet for DDR3L routing. Maintain controlled impedance for DQ, DQS, and address/command lines. Keep trace lengths matched within 50 mils for each byte lane. Use ground planes to minimize noise and ensure proper signal integrity.

The FBGA-96 package has a thermal resistance of approximately 20C/W. For high-temperature environments, ensure adequate airflow or a heatsink. The maximum operating temperature is 95C, so calculate the power dissipation and verify the junction temperature stays within limits.

Compliance Information

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Yes
Halogen Free
Unknown
Conflict Minerals
Unknown

RoHS compliant and lead-free per datasheet. Other compliance details not specified in the provided data.

Data verified on: 2026-08-18
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